<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>继承的权重</title>
    <style>

       div{
           color: blueviolet;
       }
       /* 继承的权重是最低的   0，0，0，0 */
       span{
           color: blue;
       }
    </style>
</head>
<body>
    <div>
        <span>继承的权重</span>
    </div>
</body>
</html>